33-959 15mm Dia. UVFS Aspheric Lens; EFL=10mm; NA=0.75 VIS 425-675nm

This is the 33-959 model from Edmund Optics, a 15mm diameter UV Fused Silica Aspheric Lens. The lens is designed with a high numerical aperture (NA) of 0.75, making it suitable for applications that require a wide angle of view or high light-gathering capability.

The lens is specifically designed for the visible spectrum, with a wavelength range of 425-675nm. This makes it ideal for applications such as microscopy, beam shaping, or any application that requires precise light control within the visible spectrum.

The lens features an effective focal length (EFL) of 10mm, which is the distance from the lens's optical center to the point at which it focuses light. This EFL, combined with the lens's high NA, allows for a tight focus of light, making it suitable for high-resolution imaging applications.

The lens is made from UV Fused Silica, a material known for its high transparency across a wide range of wavelengths, including the UV and visible spectra. This material also has a low coefficient of thermal expansion, making it resistant to thermal shock and suitable for use in environments with varying temperatures.

The lens is coated with a Visible (VIS) coating, specifically designed for the 425-675nm range. This coating enhances the lens's transmission in this spectrum, reducing reflections and increasing the amount of light that passes through the lens.

The lens's geometry includes a series of aspheric surfaces, which help to correct spherical aberration and other optical aberrations. This results in a lens with improved image quality and increased design flexibility compared to traditional spherical lenses.